Area Converter

Convert between metric and US/imperial units of area, including square feet, square meters, acres and hectares. Square foot, square yard, acre and square mile conversions use the exact international definitions.

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Convert acres

Convert hectares

Convert square kilometers

Convert square miles

Convert square inches

Convert square yards

Convert square centimeters

Convert square millimeters

Area units

Square foot (ft²)
A square foot is the area of a square with 1-foot sides, exactly 0.09290304 square meters. It is the standard unit for floor area in the United States.
Square meter (m²)
The square meter is the SI unit of area, the area of a square with 1-meter sides. It is used for floor area and land plots in most of the world.
Acre (ac)
An acre is 43,560 square feet, exactly 4,046.8564224 square meters. It is the usual unit for land area in the United States and is still common in the United Kingdom.
Hectare (ha)
A hectare is 10,000 square meters, the area of a square 100 meters on each side. It is the standard metric unit for farmland and forestry.
Square kilometer (km²)
A square kilometer is 1,000,000 square meters, or 100 hectares. It is used for the areas of cities, countries and lakes.
Square mile (mi²)
A square mile is 640 acres, exactly 2,589,988.110336 square meters. It is used in the United States for the areas of cities, counties and states.
Square inch (in²)
A square inch is the area of a square with 1-inch sides, exactly 6.4516 square centimeters. It is used in the United States for small surfaces and appears in the pressure unit psi.
Square yard (yd²)
A square yard is 9 square feet, exactly 0.83612736 square meters. It is used for carpet, turf and fabric.
Square centimeter (cm²)
A square centimeter is the area of a square with 1-centimeter sides, one ten-thousandth of a square meter. It is used for small surfaces such as paper, skin and components.
Square millimeter (mm²)
A square millimeter is one millionth of a square meter. It is the standard unit for the cross-sectional area of electrical wire and cable outside North America.
Are (a)
An are is 100 square meters, the area of a square 10 meters on each side. It is rarely used on its own today but is the unit from which the hectare (100 ares) is named.